Buzzy Buzzy - 5 months ago 169
Android Question

Masked Input Using EditText Widget in Android

Is there a way I can specify an input mask to the EditText control in Android?

I want be able to specify something like ### - ## - #### for a Social Security Number. This will cause any invalid input to be rejected automatically (example, I type alphabetical characters instead of numeric digits).

I realize that I can add an OnKeyListener and manually check for validity. But this is tedious and I will have to handle various edge cases.

Buzzy

Answer

Try using an InputFilter rather than an OnKeyListener. This means you don't have worry about tracking individual key presses and it will also handle things like pasting into a field which would be painful to handle with an OnKeyListener.

You could have a look at the source of the InputFilter implementations that come with Android to give you a starting point for writing your own.

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